Fireproof floor system.



W. D. FORSYTH.

FIREPROOF FLOOR SYSTEM. A PPLIGATION ILILEI) JULY 17, 1911. r 1 038 551 Patented Sept. 17,1912.

2 SHEETSSHBET 1.

- INVENTOR W. D. PORSYTH.

FIREPROOF FLOOR SYSTEM.

APPLICATION FILED JULY17, 1911.

Patented Sept. 17, 1912.

2 SHEETS-SHEET 2.

:IMNI

Juur

INVENTOR V 1/ OF YGUNGEiTGWN, OHIO.

WILLIAM ll). FOBSYTII,

IEIRE?R 0F FLOUR SYSTEM.-

Specification of Letters Patent.

Pntentm- Sept. 1152;

To all whom may concern Be it known that l, VVILLIAM D For.- SYTI'I, a citizen oi: the United States, residing in Youngstown, in the county of Mai from expanded metal for constructing fire proof floor systems with air spec-es therein when said means are used in connection with concrete; also means made from expanded metal and used in connection with concrete for reinforcing fire proof floor systems so as to permit the construction of such floor systems Withoutthe use of centering dcvices; also a reinforced metallie-cellular floor system hereinafter described.

In the accompanying drawings forming part of this specification, like reference ures refer to like parts throughout.

Figure 1 is a vertical cross section of Fig. 3 on section line A--A. Fig. 2 is vertical longitudinal cross section of Fig. 3 on soction line 13 B. Fig. 3 is a plan View of a. section of my improved reinforce-cl me alliccellular floor system, but the concrete has not been. placed upon the metallic parts thereof and with the air spaces formed in trough-like shape. Fig. 4% is a plain of a sheet of expanded metal. from which the. troughs for forming air spaces in the floor system are made. Fig. 5 is an end View or the sheet of expanded metal shown in l i ii. F lg. 5.is a perspective VlOW of the trou hlike metallic structure used for forming air spaces in my improvedfloor system, said trough like structure being made of expanded metal. Fig. 7 is a section of the joint of the trough-like structure shown in Fi 6 on section line c--c. Fig. 8 is a vertical cross section of Fig. 10 on section line E-'E, concrete being shown in ll'ig. 8 massed upon the metallic parts thereof, but in F19".

10 no concrete has yet been placed upon such metallic parts. Fig. 9 1S a. longitud nal seco'l my improvetion of Fig. 10 on section line .lZL lJ. concrele having been placed upon the metallic parts in Fig. 9, but no concrete having been placed upon the structure shown in F 10. Fig. 1G is a plan View of the metallic ports of my improved lloor system, with. the same mode ready for the placin of concrete l'l'lOl'QOll and with he air spaces formed there-min the sl'iapcolfti'ou 'lr like hoses. l i 11 is a perspective v w of one of the boxes used in my ii'nproved iioor system for the purpose of forming air spaces thin-chi, shill 'lrziiurlz-lElw boxes in! 1,9, made .fl'fill'l e indci'l. metal. Fig. 192 is :i plan View of n s root of expanded metal from which are uiormccl tho "oughslike boxes shown in perspective in Fig. 11. ,Fig. 13 is an end View of the expanded cioi sheet shcmn in llip iii. is is a section. of expanded metal used tor closing: the ends of the troug; iihe boxes shown it 13.. Fig. 15 a pl n view of the bottom of trough like her :BllQ'Wl'l. in Fig. ll. i6

is a plan View of a section. oi expanded metal. placed between the beams entering into the conslriutl ion of my improved iiloor system upon which are placed the trcmp'l'n like striuizture or the trough like host for the purpose of mining air spin. 5-; in my floor lent. Fig. i? is an end view of the sheet of expanded metal shown in Fig.

My in'ipro'vcil l'loor systcin may be con strurtod in those hull ings in which lire proof iioor S fSiEI s are installed, and pre .piiratory ti cto, iioor beams are incited in position which ali'ord means for attaching thereto, what may he termed the l r... plate lloor "yslem shown in plan and end views in Figs. 16 and 1.! oi. the drawing. .ihe beams 01 the huildingenten ing into the construction preferably made up of I beams, 1, shown in the various iigures of the drawings having the standard flanges, but said floor henms may he made of any constructnm provided. they have abutment which performs the function of the flanges oil? the I beams or other means to which the loose plate of my system as herein described may he attached or supported.

lhisc plate 2, lli s. l, 16 and 17 is maclcof sheets of ribbed expanded metal; it has two series of ribs, 2', 2' constituting one series of ribs, the rib 2", the other series, which are entire and-extend longitudinally the length of the sheet," theyare connected by reticulated portions, 2', 2, which are producedby the expansion of the sheet after the same has been properly slitted. Ribs 2, 2"'may be of any dimension and any number and at an location in the base late so as to provi efor locating and fixingthe position of troughs 3, Fig. 6, or box 4, Fig. 11, provided one of said ribs 2 is at one edge of the sheet so asto'pcrmit of the interlocking thereof with rib 2 of any base plate, but rib 2 must always be located at one edge of base j plate 2 and be of such size as to fit over *edge rib'2 of a separate base plate so as to permit the interlocking of said base 4 plates. Said base plates are. placed upon the abutments or flanges of floor beams l-in such number as to fill the opening between the main and cross beams of the floor system so as to be in a position to receive and hold I concrete on the top thereof and to be plastered with cement or other plaster on the bottom thereof.

, 3, Fig. 4, is a sheet of metal from which trough 3, Fig. 6, is made; said sheet 3 is provided with longitudinal members 3 and 3", 3, 3', 3 is an entire metal longitudinal member extending the length of the sheet and is of such width as to be capable I jacent longitudinal member 3'. I mentioned long1tudinal member 3 elf) into ribs 3*, 3", shown in end view in Fig. 5,

the edge rib 3 is of such size and dimension as to be capable of being inserted in rib 3, so that several sheets, 3, may be joined together by means oft-heir respective ribs 3 and edge rib 3", so as to permit the making of trough 3 of any length that may be desired in the construction of my door system.

Sheets 3' having been formed with their ribs 3 and 3" as aforesaid, said ribs being connected by reticulated sections of said sheet, they are by suitable presses and dies pressed into a U-shaped section as shown embodied in trough 3 in l ig. 6. Where a trough longer than that which may be formed by a single sheet is desired, then two troughs formed of single sheets are con nected by means of rib 3 of one being placed over edge rib 3 of a second, as shown at section line 0-0 in Fig. 6, the end View of reception of plaster being placed on the bottom thereof as shown in Fig. 1.

i If additional reinforcements be desired, then bars 5, 5 '5, may be placed parallel ,to the longitudinal axes of troughs 3, as shown in Figs. 1, 2 and 3, sections of said bars 5, being shown in Fig. 1 and the entire bars being shown in Figs. 2 and 3.

I Box 4 in Fig. l1 is made from a sheetof metal, 6, which has entire longitudinal members 8', 6', 6', connected by reticulated por- ;tions as shown in Fig. 12 in'plan View and @Fig. 13 in end View, the ribs being shown in both figures. Said ribs 6, 6, 6, are connected by reticulated sections 7, 7, said ribs 6 are of the same size and dimension; the reticulated sections 7 are formed in any suitable manner so as to permit of the expansion of the sheet from which it'is made. While in Figs. 12 and 13 said sheet is shown with three ribs and two reticulated sections connecting the same, where desired the'nnm- ,ber oi ribs and reticulated sections may be increased. When said sheet 6 has been "expanded and ribs 6, 6, 6, have been formed therein by means of suitable presses and dies, it is formed in a U shaped section l as shown in Fig. 11 with the endribs of s:;id boxes 6, 6, being capable of receiving a sheet of expanded metal'S, as shown in Fig. 15, so that box 4 of Fig. 11 shall be closed on five sides, the bottom alone being open;

Fig. is a plan View of sheet 8 ofeX- panded metal, which may be expanded metal of any character, said sheet 8 shall be of such size and dimension as to be capable of being inserted in end ribs 6', 6, of box l.

My lioor system as constructed by the use of box 4:, Fig. 11, is shown in the cross section in Fig. 8 and the longitudinal cross section Fig. and in plan in Fig. 10. It is constructed by placing base plate 2 between the floor beams of theiloor system and then placing therein between the ribs 2, 2, of said base plate 2, boxes spaced with reference to each other suliistantially as shown in Fig. 10; As thus prepared my improved floor system is ready for the receptionof concrete on the top thereof and plaster on the bottom thereof.

Bars 5, 5, 5, may be used in connection withv said boxes and base plates, and bars 9, 9, 9, may also be used, placing the same substantially at right angles to bars 5, 5, 5,

master in connection with said base plate 9. and box 4 said bars being placed 111 position whether one orboth series thereof be used'before concrete is placed upon said base plates and boxes.

Troughs 3 and box a and the expanded metal composing them as well as the base plates 2, are of such construction as to per mit the keying of some. mortar or plaster on .all sides of said boxes, troughs and base plates, and when properly applied form in my improved floor system air cells in which the ribs strengthen and stiffen the system and in connection with the concrete the bars which may be used therewith aiford a means placed around and on top of the same with out the ne essity of supporting centers or centering devices. This characteristic of my base plates cheapens and simplifies the construction of fire proof floor systems in building. The difference in weight of the troughs or boxes, as the case may be, the same are used in floor construction in accordance with my invention herein de scribed, also lessens the weight oftlnfloor system as compared with thegfloor system constructed by the usei'of tile or terra cotta or solid metal meal is of making air cells, the air cells permittedby 'my construction being made with the least possible amount of metal and weight as compared with constructions heretofore in use.

lVhat I claim as my invention is:

1. In a reinforced concrete floor system a sectional metallic trough having curved ribs transverse the axis thereof; said ribs being connected with each other by secti ns of reticulated metal of said trough; said troughbeing provided with means at the ends thereof for interlocking, end to end, with like metallic troughs in said system.

2. In a reinforced concrete floor system, a metallic trough having curved ribs transverse the axis thereof connected by sections of reticulated metal, said ribs being at the ends of. said trough and intermediate said ends and means insertible in the end ribs of said trough for closing the ends thereof.

3. In a reinforced concrete floor system, the combination of the floor beams of the building with metallic sectional base plates having entire longitudinal ribbed sections connected by reticulated sections and means of interlocking said base plates; sectional metallic interlocking troughs, having curved ribbed sections with ribs transverse their axes and means for interlocking the sections thereof, mounted upon said base plates; and plastic cementitious material applied'to said floor beams, baseplatcs and troughs so as to form air spaces within said troughs and the ceiling and floor of rooms in said building respectively below and above said floor system. 7

1-. In a reinforced concrete floor system, the combination of the floor beams of the building with metallic sectional base plates having entire longitudinal ribbed. sections connected by reticulated sections and means of into oclting said base plates; sectional metallic interlocking troughs having curved ribbed sections with ribs transverse their axes t nd means for interlocking the sect-ions thereof, mounted upon said base plates; reinforcing bars placed. above said base plates, between said floor beams and said troughs, and between said troughs, parallel to the axes of said troughs; and plastic cementitious material applied to said floor beams, base plates and troughs so as to form air spaces Within. said troughs and the ceiling and floor of rooms in said building respectively below and above said floor spaces.

5. in a reinforced concrete floor system the combination of floor beams of the building with metallic sectional. base plates having entire longitudinal ribbed sections connected by reticulated sections and means of interlocking the sections thereof; metallic troughs closed at both ends thereof mounted upon said base plates so as to form spaces, for the reception of cementitious material, plastic cementitious material placed upon said floor bean-1s, base plates, and end closed metallic troughs so as to form air spaces within said. troughs and the ceiling and the floor of the rooms in said. building below and above said floor system respectively.

6. in a reinforced concrete floor system,

the combination of door beams of the building with metallic sectional base plates having entire longitudinal. ribbed sections connected by reticulated sections and means of interlocking the sections thereof; metallic troughs closed at both ends thereof mounted upon said base plates so as to leave spaces for the reception of cementitiousmaterial on all sides of said end closed trougns;

' and bars placed above said base plates in the 7. In a reinforced concrete floor system a 1 equal in area to the surface of the small end 10 sectional metallic trough having at its ends rib outside of its curve. and intermediate said ends and transverse In testimony whereof I have signed this its axis curved ribs of similar cross section, specification in the presence of two subscriband connected with each other by reticuing Witnesses.

latecl metal sections of said trough; one end WILLIAM D. I FORSYTH I rib being larger in cross section than the l/Vitnesses: other end rib; the surface of the large end M. E. THOMAS,

rib inside of its curve being substantially AGNES SNYDER. 

